Question 692319: solve the following equations (give the exact answer) and then approximate the answer by rounding to 3 decimal places.
e^-4x+2 +11=25 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! solve the following equations (give the exact answer) and then approximate the answer by rounding to 3 decimal places.
e^(-4x+2) +11=25
-----
e^(-4x+2) = 14
---
-4x+2 = ln(14)
Exact answer:
x = (ln(14) - 2)/(-4)
----
Approximation:
-4x+2 = ln(14)
-4x+2 = 2.6391..
-4x = 0.6391..
x = -0.1598..
==================
Cheers,
Stan H.
(